Coral bells (Heuchera) grow best in full sun or shade and moist, well-drained soil. Plants will not tolerate clay or poorly drained soil. Cool summer nights are best. Enrich the bed with well-decomposed organic matter. Deadhead to encourage rebloom, cutting the stalkoff at the base. In winter, cover plants with loose mulch to prevent frost heaving. Coral bells make good companions with hosta, bleeding heart, and lady's mantle.